Home / 90,419.20-124,825.50-70,230.88

Finding the Fourth Proportional to 90,419.20, 124,825.50 and 70,230.88

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Solution

The fourth proportional to 90,419.20, 124,825.50 and 70,230.88 is: 96,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,419.20 : 124,825.50 = 70,230.88 : x
  2. Step 2: Convert to fraction form
    90,419.20/124,825.50 = 70,230.88/x
  3. Step 3: Cross multiply
    90,419.20x = 124,825.50 × 70,230.88
  4. Step 4: Simplify right side
    90,419.20x = 8,766,604,711.44
  5. Step 5: Solve for x
    x = 8,766,604,711.44/90,419.20
  6. Step 6: Final answer
    x = 96,955.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.